The 557 is not just a fancy name but also the amount of horsepower the engine gets which means it can cut the weight and drag you might get from multiple high horsepower engines which naturally makes for a smoother ride on the water. It also means you can't just hook it up to just any random dingy.

It was introduced as a concept at the at the 2011 Miami International Boat show and was very well received there. So much so that this year Seven Marine decided to produce it, and have already began receiving orders. It will retail for around $70,000.